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Very popular species, selectively bred into several colour forms (blue being the original form). Prefers a well planted tank, also with some floating plants. Males develop longer dorsal and anal fins.

Gourami's are popular with fish keepers due to their gentle nature, affordability, and hardiness. They can sometimes be territorial to other male gourami's, so in a smaller tank it's recommended to keep a single male. Native to Southeastern Asia and available in a wide variety of colours and patterns.

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Features of Opaline Gourami:

  • Silvery blue base body colour with darker blue marbelling
  • The ventral fin is thread-like
  • Peaceful, docile fish that do well in community tanks
  • They swim in the top and middle levels of the tank 
  • Gourami's have a unique labyrinth organ that they can swim to the surface to breathe air
  • Grows to 15cm

The Best Aquarium Size for Opaline Gourami's:

The minimum tank size for gourami's is 120L. Increase the tank size whenever you add new fish and live plants. Opt for an elongated tank shape. Also, the tank must have a lid to avoid them jump out of the tank.

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Tank Mate Compatibility:

Opaline Gourami's are compatible with most similar-sized, peaceful species. Avoid boisterous or fin-nipping fish. Great tank mates include:


Opaline Gourami's will accept all types of live, frozen, and dry foods. Feed flakes, and pellets, as well as frozen and live foods such as bloodworms, mosquito larvae, brine shrimp, and daphnia.

Check out our extensive range of aquarium fish foods.

Opaline Gourami Tank Setup:

Aquarium Filtration for Opaline Gourami's

filtration system is necessary for removal of waste and debris. Gourami's do not like fast or strong water flow. Opt for an aquarium filter suitable for your fish tank size that cleans effectively, but offers the ability to reduce flow. If water current is to strong, use sturdy aquarium plants and ornaments to create areas of reduced water current for refuge.

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Aquarium Lighting for Opaline Gourami's

Ensure the lighting is subdued. Light is necessary for the photosynthesis required for the health and growth of all aquarium plants. LED aquarium lighting with dimmable functions enable to you set the appropriate lighting

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Aquarium Heater for Opaline Gourami's

This fish enjoy temperatures between 23 - 27° C. If you are unable to maintain this temperature naturally, use an aquarium heater. Aquarium heaters also stabilize water temperatures.  A thermometer is recommended to monitor the water temperature.

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Aquarium Plants for Opaline Gourami's

Opaline Gourami's prefer a planted aquarium to swim in and around the foliage, as well as floating plants that subdue intense lightingGourami's are known to eat plants, so you should add resilient plants with firmer leaves to the tank.

 Interested in live plants for your aquarium? View our range of live aquarium plants here.

Aquarium Decorations for Opaline Gourami's

Decorations of personal preference can be used in aquarium with gourami's. Ensure there is structure for your Gourami's to hide and rest around that breaks up water flow. Rock and driftwood mimic natural environments, while resin ornaments add character and design to an aquarium.

View our large range of aquarium decorations here.

Aquarium Substrate for Opaline Gourami's

Use sand or a dark, fine gravel for the tank’s substrate. If keeping a planted aquarium, consider the use of nutrient rich substrates such as aqua-soils.

A variety of Substrates are available at Coburg Aquarium. 

Additional Information

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Aquarium Set-up Service:

Our design team enables us to create the tank you desire, install your tank where you wish to and provide a maintenance service to ensure everything runs smoothly. We can create almost any aquarium from the small home aquarium to large commercial aquariums. Please contact us for custom tank services.